摘要
A model for fast electron-driven high-density plasma is proposed to describe the effect of injected fast electrons on the temperature and inner pressure of the plasma in the fast heating process of the double-cone ignition(DCI)scheme.Due to the collision of the two low-density plasmas,the density and volume of the high-density plasma vary.Therefore,the ignition temperature and energy requirement of the high-density plasma vary at different moments,and the required energy for hot electrons to heat the plasma also changes.In practical experiments,the energy input of hot electrons needs to be considered.To reduce the energy input of hot electrons,the optimal moment and the shortest time for injecting hot electrons with minimum energy are analyzed.In this paper,it is proposed to inject hot electrons for a short time to heat the high-density plasma to a relatively high temperature.Then,the alpha particles with the high heating rate and PdV work heat the plasma to the ignition temperature,further reducing the energy required to inject hot electrons.The study of the injection time of fast electrons can reduce the energy requirement of fast electrons for the high-density plasma and increase the probability of successful ignition of the high-density plasma.
作者
Zhong-Yi Chen
Kai-Ge Zhao
Ying-Jun Li
陈忠义;赵凯歌;李英骏(School of Science,China University of Mining and Technology,Beijing 100083,China;Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology,Center for Intense Laser Application Technology,and College of Engineering Physics,Shenzhen Technology University,Shenzhen 518118,China;State Key Laboratory for Tunnel Engineering,China University of Mining and Technology,Beijing 100083,China)
基金
Project supported by the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDA_(2)5051000)
the National Key R&D Program of China(Grant No.2023YFA1608400)
the National Natural Science Foundation of China(Grant No.12005008)
the Natural Science Foundation of Top Talent of SZTU(Grant No.GDRC202209).
